Kristine Pierson's family is offering a $5,000 reward for information leading to an arrest of the person or people responsible for her death.

"To know that someone is walking around and talking and laughing and having their life and Kristine doesn’t, you know, I’ll never be able to talk to her again. I'll never be able to have her wedding or her babies. I just can't get her back, but I'm going to make sure we find out who did this," said Pierson’s mother, Cheryl Browning.

Two months after Pierson's body was found near the intersection of 33rd Street and Rudd Avenue, the coroner hasn't released the cause of death. Louisville Metro Police Department homicide detectives are investigating, but have not formally ruled Pierson's death a homicide.

“Our part of the investigation is just as important to the medical examiner as to what the actual autopsy will reveal. Once we finish our investigation, we will get with them and sit down. Right now, it is undetermined because the investigation is not complete at this point,” said LMPD Lt. Todd Kessinger.

Pierson's friends and family gathered downtown Thursday to make a plea for answers in the case.

"I think, though, there are some people not being honest. I know they have some people of interest they are looking for that they are not able to find," said Browning.

A source told WLKY's Erica Coghill that police have identified a woman who rented a car that was seen picking up Pierson on Jan. 14. Pierson was found dead three days later. Police are unable to find that woman.

What authorities need to know, is whom Pierson came in contact with and where she was in the 72 hours leading up to her death.

Family members said they don't know who was last with Pierson and they are certain she wasn't alone because she had no car and didn't live in the Portland area, nor have any friends that they knew of there.

Family members hope the reward will lead to some tips in the case. They said the smallest detail could help.

"The family needs some kind of closure we need to know what happened to Kristine that night," said Pierson's grandmother, Donna Pierson.

Anyone with information should call 574-LMPD or CrimeStoppers at 582-CLUE. A tip to CrimeStoppers leading to an arrest will add an additional $1,000 to the reward.

A LOUISVILLE FAMILY WHOSE LOVED ONE WAS FOUND DEAD IN AN ALLEY-- IS OFFERING THOUSANDS OF DOLLARS IN EXCHANGE FOR INFORMATION. PLUS, A SOURCE SHARES NEW INFORMATION IN THE CASE-- THAT YOU'LL ONLY HEAR ON WLKY. WLKY'S ERICA COGHILL NOW JOINS US LIVE AT L- M-P-D WITH THE LATEST-- ERICA WHAT DO WE NOW KNOW? RICK -- AUTHORITIES TELL ME THE PROBLEM THEY'RE FACED WITH IN THIS CASE-- IS THAT PEOPLE WHO WERE LAST IN CONTACT WITH PIERSON ARE NOT COMING FORWARD. A SOURCE TELLS ME THEY'RE TRYING TO GET IN CONTACT WITH ONE WOMAN, IN PARTICULAR. THAT SOURCE TELLS ME AUTHORITIES HAVE IDENTIFIED A WOMAN WHO RENTED A RENTAL CAR THAT WAS SEEN PICKING- UP PIERSON ON JANUARY 14TH-- HER BODY WAS FOUND THREE DAYS LATER. THEY SAY IT'S A LOSS SO LARGE-- THEIR BROKEN HEARTS JUST WON'T MEND. BUT ONE THING HER FAMILY IS TRYING TO HELP PIECE TOGETHER-- IS KRISTINE PIERSON'S CASE. IT'S BEEN NEARLY TWO MONTHS SINCE CHERYL BROWNING'S DAUGHTER WAS FOUND DEAD NEAR THE INTERSECTION OF 33RD STREET AND RUDD AVENUE-- AND AUTHORITIES SAY KEY PEOPLE IN THE CASE STILL HAVEN'T COME FORWARD. WHO SHE WAS WITH AND WHERE-- BETWEEN JANUARY 14TH UNTIL HER BODY WAS DISCOVERED DAYS LATER ON THE 17TH. WHILE HOMICIDE DETECTIVES ARE INVESTIGATING, PIERSON'S CASE HAS NOT BEEN RULED A MURDER--- BUT HER MOTHER BELIEVES IT WAS. BROWNING SAYS HER DAUGHTER HAD NO CAR-- HER FAMILY HAS NO CONNECTION TO PORTLAND, NOR DID PIERSON HAVE ANY FRIENDS THAT LIVED THERE THAT HER MOTHER KNEW OF. WHAT SHE DOES KNOW-- THE PAIN OF LOSING A CHILD. THE SMALLEST DETAIL COULD HELP. YOU CAN LEAVE A TIP ANONYMOUSLY AT 574- LMPD. ALSO, CRIMESTOPPERS IS OFFERING AN ADDITIONAL ONE-THOUSAND DOLLARS TO THE FIVE-THOUSAND DOLLAR REWARD-- FOR ANYONE THAT CALLS THEIR NUMBER WITH INFORMATION LEADING TO AN ARREST. THAT NUMBER IS 582- CLUE. ERICA COGHILL, WLKY NEWS.